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E. V. Goncharov
E. V. Goncharov
Saint-Petersburg Mining University
Saint-Petersburg Mining University
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Articles

Mining
  • Date submitted
    2016-10-07
  • Date published
    2016-04-01

The technology of extracting gaseous fuel based on comprehensive in situ gasification and coalbed degassing

The study considers a comprehensive technology (designed and patented by the authors) of developing coal and methane deposits which combines in situ gasification of lower coalbeds in the suite of rock bump hazardous gassy beds, extraction of coal methane and mechanized mining of coal. The first stage of the technology consists in mining gaseous fuel that enables one to extract up to 15-20 % of total energy from the suite of coalbeds. Geodynamic zoning is used to select positions for boring wells. Using the suggested technology makes it possible to solve a number of tasks simultaneously. First of all that is extracting gaseous fuel from the suite of coalbeds without running any mining works while retaining principal coalbeds in the suite and preparing them for future processing (unloading and degassing). During the first phase the methane-coal deposit works as a gas deposit only, the gas having two sources – extracted methane (which includes its locked forms, absorbed and adsorbed) and the products of partial incineration of thin coalbeds, riders and seams from thee suite. The second stage consists in deep degassing and unloading of coal beds which sharply reduces the hazards of methane explosion and rock bumps, thus increasing the productivity of mechanized coal mining. During the second stage coal is mined in long poles with the account of degassing and unloading of coal beds, plus the data on gas dynamic structure of coal rock massif.

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A. N. Shabarov, S. V. Tsirel', E. V. Goncharov, V. V. Zubkov (2016) The technology of extracting gaseous fuel based on comprehensive in situ gasification and coalbed degassing. Journal of Mining Institute. Vol 220. p. 545. DOI: 10.18454/pmi.2016.4.545
Problems in geomechanics of technologeneous rock mass
  • Date submitted
    2016-12-21
  • Date published
    2010-01-01

Physical modeling of energy exchange in rock mass

The cause of manifestation of dangerous dynamic phenomena, such as rock bursts, earthquakes, etc., appears to be the energy exchange in rock mass. The inaccessibility of rock mass for carrying out the full-scale observations has stimulated to study this problem with using the methods of laboratory modeling. Description is given to the substance of energy exchange in situ, the principles of its physical modeling in the laboratory, to the test equipment as well as to some results of our investigations. 

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E. V. Lodus, E. V. Goncharov (2010) Physical modeling of energy exchange in rock mass. Journal of Mining Institute. Vol 185. p. 64.
Problems in geomechanics of technologeneous rock mass
  • Date submitted
    2016-12-21
  • Date published
    2010-01-01

Application of solid oxygen-containing substances for higher productivity of oil wells

The technological principles and results of realization of exothermal reactions in oil-and-gas productive wells are presented. Unique comfinations of chemical reagents on base of chlorates, saltpetres, etc ensured the simplicity, low prices and efficiency of technological operations for intensive influxes of oil and gas. High efficiency is reached not only due to reduction of oil viscosity and removal of paraffin and asphaltenes, but also due to re-forming of the reservoir rocks by relief of rock pressure and extension of fractures.

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A. T. Karmanskii, E. V. Goncharov (2010) Application of solid oxygen-containing substances for higher productivity of oil wells. Journal of Mining Institute. Vol 185. p. 123.
Mining
  • Date submitted
    2016-12-29
  • Date published
    2016-06-01

Geodynamic methods for assessing methane distribution in bituminous coal deposits and measures to intensify methane fluxes during mine gas drainage

This paper explores states of methane within the coal bearing stratum and shows heavy dependency of the intrastratal gas migration on the forms of porous space and petrographic properties of coal. The adsorbed methane is found to be predominant in the coal of Kuznetsk Basin. Different forms of coal diffusion and filtration are described revealing their dependency on geological and thermodynamic conditions. The paper provides justification for the primary focus on geodynamic processes when designing gas drainage systems and applicability of morphometric methods and remote sensing data for their identification. The significance of researches into the processes activating exothermic reactions resulting in methane transition to free state is explained. The paper presents the results of using seismic-acoustic stimulation techniques as one of the practical approaches to addressing this issue. Results of successful industrial testing have been compared with the results of numerical modelling of stress-strain state, which can also be managed through seismic-acoustic stimulation.

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E. V. Goncharov, S. V. Tsirel' (2016) Geodynamic methods for assessing methane distribution in bituminous coal deposits and measures to intensify methane fluxes during mine gas drainage. Journal of Mining Institute. Vol 222. p. 803. DOI: 10.18454/pmi.2016.6.803